Trapezoidal fuzzy numbers have numerous advantages over triangular fuzzy numbers as they have more generalized form. In this paper, two sample statistical test of hypothesis for means in normal population with interval data is given. The decision rules whether to accept or reject the null...

This chapter discusses the formal and informal techniques that are commonly used to give quantitative answers in the field of distributional analysis. To this end, it covers subjects including inequality, poverty, and the modeling of income distributions. It also deals with parametric and...